<template>
    <div>
        <div class="search">
            <input v-model="keyword" class="search-input" type="text" placeholder="请输入城市名或拼音">
        </div>
        <div 
          class="search-content" 
          ref="search"
          v-show="keyword"
        >
            <ul>
                <li 
                  class="search-item border-bottom" 
                  v-for="item of list" 
                  :key="item.id"
                >
                    {{item.name}}
                </li>
                <li class="search-item border-bottom" v-show="hasNoDate">
                没有找到匹配数据
                </li>
            </ul>
        </div>
    </div>
</template>

<script>
    import Bscroll from 'better-scroll'
    export default {
    name: "CitySearch",
    props: {
        cities: Object
    },
    data() {
        return {
            keyword: '',
            list:[],
            timer: null
        }
    },
    computed:{
        hasNoDate () {
            return !this.list.length
        }
    },
    watch : {
        keyword () {
            if(this.timer) {
                clearTimeout(this.timer)
            }
            if(!this.keyword) {
                this.list = []
                return
            }
            this.timer = setTimeout(() => {
                const result = []
                for(let i in this.cities) {
                    this.cities[i].forEach((value) => {
                        if(value.spell.indexOf(this.keyword) > -1 || value.name.indexOf(this.keyword) > -1) {
                            result.push(value)
                        }
                    })
                    }
                    this.list = result
            },100)
        }
    },
    mounted () {
        this.scroll = new Bscroll(this.$refs.search)
     }
    };
</script>

<style lang="stylus" scoped>
    .search {
        height: 0.72rem;
        padding: 0 0.1rem;
        background: #00bcd4;
    }

    .search-input {
        box-sizing: border-box;
        width: 100%;
        height: 0.62rem;
        line-height: 0.62rem;
        padding: 0 0.3rem;
        text-align: center;
        border-radius: 0.06rem;
        color: #666;
    }
    .search-content{
        z-index:1;
        overflow:hidden;
        position:absolute;
        top:1.58rem;
        left:0;
        right:0;
        bottom:0;
        background:#eee;
    }
    .search-item{
        line-height :.62rem;
        padding-lefe:.2rem;
        color:#666;
    }
</style>
